JPH0549773A - Sewing machine incorporating embroidering device - Google Patents

Abstract

PURPOSE:To issue a warning in order to prevent an embroidery frame from interfering with a button hole lever and a side cutter when the button hole lever is arranged at a lowered position or the side cutter is installed, in the case of embroidery sewing. CONSTITUTION:An embroidering device 30 is removably attached to a sewing machine. When a side cutter is attached to the sewing machine, a side cutter detection switch 15 is turned on. Further, during stitching of a button hole, when a changeover lever (button hole lever) adapted to be changed-over by moving a retainer foot for stitching the button hole is moved from an upper retracted position to a descent position, the lever detection switch 14 is turned on. When a embroidery initiating key is manipulated, signal conditions of both switches are detected, thereby a warning is issued for removal of a side cutter and upward movement of a lever.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine with an embroidery device, and in particular, at the start of embroidery sewing using the embroidery device, the setting position of a sewing length setting lever and the mounting state of a cloth edge cutting device are detected. Relates to the one that gives a warning when the embroidery sewing is hindered.

[0002]

2. Description of the Related Art Conventionally, practical patterns such as straight stitches and zigzag stitches can be sewn, and embroidery stitches of relatively large characters, concrete shapes and figures can be sewn on the sewing machine so that they can be detachably attached to the free arm section. An obtainable embroidery device has been proposed.

[0003] For example, the applicant of the present application discloses in Japanese Patent Laid-Open No. 2-800
In Japanese Patent Publication No. 84, the embroidery table is configured to be movable in the cloth feeding direction and the non-cloth feeding direction (Y direction) and in the X direction orthogonal to the Y direction, and the X direction drive signal received from the sewing machine main body. While driving the first pulse motor to move in the X direction, the second pulse motor can be driven by the Y direction drive signal to move the embroidery table and form an embroidery pattern on the work cloth, and it can be attached to and detached from the sewing machine body. I proposed an embroidery device to be attached to.

By the way, generally, in a sewing machine with an embroidery device of this kind, an operating lever for setting a sewing length of a work cloth in a cloth feed direction is used as a free arm in the vicinity of a presser foot for button oversewing or patch sewing. The sewing machine head is provided so as to be able to move up and down between a lowered position near the upper part and a raised position. In addition, a cloth edge cutting device (side cutter) can be detachably attached on the free arm part near the needle drop position so that the cloth edge of the work cloth immediately before the overlock stitching can be automatically cut. It is like this.

[0005]

As described above, in the conventional sewing machine with the embroidery device, the embroidery device is attached to the free arm portion of the sewing machine body, and the side cutter is detachably attached. Since the operation lever is configured to be able to move up and down, when the embroidery device is attached to the free arm portion to perform embroidery sewing, when the operation lever is in the lowered position, or the side cutter is attached to the free arm portion. When mounted, there is a problem that the support frame that supports the work cloth of the embroidery device moves during embroidery sewing and collides with these operation levers and side cutters.

An object of the present invention is to issue a warning when the setting position of the sewing length setting lever and the mounting state of the cloth edge cutting device interfere with the embroidery sewing during the embroidery sewing using the embroidery device. A sewing machine with an embroidery device is provided.

[0007]

As shown in the functional block diagram of FIG. 1, a sewing machine with an embroidery device according to the present invention has an embroidery device provided in the sewing machine main body and a head position of the sewing machine main body, which can be vertically moved. Is a sewing length setting means for setting the sewing length in the working cloth feed direction and a cloth end cutting device detachably mounted on the bed of the sewing machine main body. In a sewing machine with an embroidery device including at least one of a cloth edge cutting device for cutting a cloth edge, a detection means for detecting a setting position of the sewing length setting means and / or a mounting state of the cloth edge cutting device. , A display for displaying a warning to prohibit the operation of the embroidery device when the sewing length setting device is in the lowered position and / or the cloth edge cutting device is in the mounted state based on the detection result of the detection device. Warning means having It is those with a.

[0008]

In the sewing machine with the embroidery device according to the present invention,
The detecting means is provided on the head of the sewing machine so that the lifting position can be switched freely, and can be detachably attached to the setting position of the sewing length setting means for setting the sewing length in the work cloth feed direction and / or on the bed of the sewing machine body. A cloth edge cutting device to be mounted detects the mounting state of the cloth edge cutting device for cutting the cloth edge of the work cloth upstream of the sewing position. The warning means operates the embroidery device at the start of embroidery sewing, based on the detection result of the detection means, when the sewing length setting means is in the lowered position and / or when the cloth edge cutting device is in the mounted state. Display a warning indicating prohibition on the display unit.

[0009]

According to the sewing machine with the embroidery device of the present invention, as described in the section [Operation], the detecting means and the warning means are provided, and the setting position of the sewing length setting means and / or Alternatively, when the mounting state of the cloth edge cutting device is detected and a warning is displayed when the sewing length setting means is in the lowered position and / or when the cloth edge cutting device is in the mounted state, the setting of the sewing length setting lever is performed. When the position or the mounting state of the cloth edge cutting device interferes with the embroidery sewing, a warning can be issued in advance.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a case where the present invention is applied to an electronic control sewing machine with an embroidery device to which various embroidery devices capable of sewing embroidery patterns can be detachably mounted. As shown in FIG. 2, the electronically controlled sewing machine M includes a sewing machine bed portion 1, a pedestal portion 2 erected from the right end of the bed portion 1, and a pedestal portion 2 facing the bed portion 1. The bed portion 1 is provided with a feed dog up-and-down moving mechanism (not shown) for moving the feed dog up and down and a feed dog forward-backward moving mechanism (not shown) for moving the feed dog up and down. The arm portion 3 includes a needle bar drive mechanism for vertically moving the needle bar 5 to which the sewing needle 6 can be attached at the lower end, a needle bar swing mechanism for swinging the needle bar 5 in a direction orthogonal to the cloth feed direction, and a balance. A balance driving mechanism (not shown) that moves up and down in synchronization with the up and down movement of the needle bar is provided. The feed dog vertical movement mechanism, the needle bar drive mechanism and the balance drive mechanism are driven by the sewing machine motor 17, the feed dog longitudinal movement mechanism is driven by the feed tooth drive stepping motor 19, and the needle bar swinging mechanism is the needle. It is driven by the rod swing stepping motor 18.

A large liquid crystal display 10 is provided on the front surface of the arm portion 3, and the display 10 includes:
Various seams such as practical patterns and embroidery patterns, figures such as figures, and various messages are displayed. Further, on the front surface of the display 10, touch keys 11 made of transparent electrodes are provided corresponding to respective display positions of a plurality of stitch patterns, and a touch key 1 corresponding to a desired stitch pattern is provided.
It can be selected by pressing 1. Head 4
Is provided with a start / stop switch 12 for instructing start and stop of sewing work. Further, an operation panel 13 is provided on the front surface of the upper end portion of the pedestal portion 2.
9 function keys (practical sewing key for displaying a practical pattern, character sewing key for displaying a character pattern, embroidery sewing start key 13a for starting embroidery pattern sewing, etc.)
Is provided.

Further, a switching lever 7 for automatically switching the sewing direction and setting the sewing length in the work cloth feeding direction is supported on the head 4 so as to be movable up and down when the buttonhole is sewn. The lever detection switch 1 is closed or opened in association with the vertical movement of the switching lever 7.
4 are provided. Therefore, the lever detection switch 14 is closed when the switching lever 7 is in the raised non-use position, and is opened when the switching lever 7 is in the lowered use position.

A free arm portion 1a is formed at the left end portion of the bed portion 1, and an embroidery device 30 is detachably attached to the free arm portion 1a. An embroidery table 31 is provided in the embroidery device 30 so as to be movable in a Y direction parallel to the cloth feed direction and the opposite cloth feed direction and in an X direction orthogonal to the Y direction. A support frame 32 for supporting the can be detachably attached. In the main body frame of the embroidery device 30, a first stepping motor 33 for driving the embroidery table 31 in the X direction and a second stepping motor 34 for driving the embroidery table 31 are arranged. The stepping motors 33 and 34 are the connectors 27 on the Minsi M side.
Each of them is driven by receiving a drive signal supplied via.
Therefore, various embroidery patterns are formed on the work cloth supported by the support frame 32 by the cooperation of the driving of both the stepping motors 33 and 34 and the vertical movement of the needle bar 5 by the drive signal supplied from the sewing machine M. It is like this.

Further, the free arm portion 1a has a side cutter (cloth edge cutting device) 8 for cutting the cloth edge of the work cloth upstream of the overedging position in the cloth feeding direction at the time of overcut stitching or the like. Can be removably attached. Further, a side cutter detection switch 15 for detecting the mounting state of the side cutter 8 is provided in the free arm portion 1a. Therefore, the side cutter detection switch 15 is closed when the side cutter 8 is attached to the free arm portion 1a, and opened when it is detached from the free arm portion 1a.

Next, the outline of the control system of the sewing machine M is constructed as shown in the block diagram of FIG. A start / stop switch 12, a touch key 11, an operation panel 13,
The timing signal generator 16 is connected to the input interface 21 of the controller C, respectively. Further, the output interface 26 of the control device C has a sewing machine motor 1
7, needle bar swing stepping motor 18, feed dog drive stepping motor 19, display (LCD) 10
A display controller (LCDC) 20 for each is connected to each. Further, the output interface 26 is connected to the first stepping motor 33 and the second stepping motor 34 of the embroidery device 30 via the connector 27, respectively.

The input port P1 of the input interface 21 is connected to the input side terminal of the lever detection switch 14, and the output side terminal of the switch 14 is grounded. Further, the input side terminal of the side cutter detection switch 15 is connected to the input port P2 of the input interface 21, and the output side terminal of the switch 15 is grounded. Furthermore, + 5V is supplied to each of these input ports P1 and P2,
Both of these input ports P1 and P2 are always pulled up to "H" level. Therefore, the "L" level signal is input to the input port P1 when the switching lever 7 is in the unused position, and the "H" level signal is input when the switching lever 7 is in the used position. On the other hand, the "L" level signal is input to the input port P2 when the side cutter 8 is attached, and the "H" level signal is input when the side cutter 8 is removed.

The control device C includes a CPU 23 and this CPU
23, an input interface 21, an output interface 26, which are connected to a bus 23 such as a data bus.
The ROM 24 and the RAM 25 are included.

The ROM 24 stores the stitch data of each stitch pattern of practical sewing, pattern stitching, and embroidery stitching, classifying it by pattern type and associating it with a pattern code number.
24 also stores a control program for pattern sewing control for sequentially reading and sewing the stitch data of each selected and set stitch pattern. Further, in the ROM 24, the motors 17-1
9, a drive control program for driving 9, a display control program for displaying display data on the display 10, a control program for warning message display control described below for displaying various warning messages on the display 10 when sewing an embroidery pattern, and execution of this control. It stores display data for various messages displayed inside. The RAM 24 is provided with a pattern memory for storing the pattern numbers of a plurality of stitch patterns selected by operating the touch key 11, a pointer, a counter, a buffer, etc. for temporarily storing the calculation result calculated by the CPU 23. ..

Next, a warning message display control routine executed by the controller C of the sewing machine M will be described with reference to the flowchart of FIG. In the figure, the reference symbol Si (i
= 10, 11, 12, ...) is each step.

After mounting the embroidery device 30 on the sewing machine M, this control is started when the embroidery sewing start key 13a of the operation panel 13 is operated to start the sewing of the embroidery pattern,
First, the port signal of the input port P1 is read (S1
0), when the port signal is at the "L" level, that is, when the switching lever 7 is raised to the unused position (S11: Y).
es), the port signal of the input port P2 is read (S1
2) When this port signal is at the “H” level, that is, when the side cutter 8 is not attached to the sewing machine M (S1
3: No), this control ends. However, when the read port signal of the input port P1 is at the "H" level, that is, when the switching lever 7 is lowered to the use position (S11:
No), the warning message "Please raise the switching lever used for button overstitching" is displayed on the display 10 (S14), and this control is terminated. On the other hand, even when the read port signal of the input port P1 is at the “L” level (S10, S11: Yes), when the port signal of the input port P2 is at the “L” level (S12, S13:
Yes), the warning message "Please remove the side cutter." Is displayed on the display 10 (S1).
5).

As described above, the up / down position of the switching lever 7 and the mounted state of the side cutter 8 are detected during embroidery sewing, while the switching lever 7 is in the lowered position or the side cutter 8 is mounted on the sewing machine M. While the warning is displayed on the display 10, the warning can be urged when the elevation position of the switching lever 7 and the mounted state of the side cutter 8 hinder the embroidery sewing.

The warning message display control S1
4. In S15, instead of displaying the warning message,
A warning lamp provided on the front surface of the arm portion 3 may be turned on, or a warning buzzer may be sounded. Further, in addition to displaying the warning, the drive circuit of the sewing machine motor 17 may be controlled to be disconnected so that the sewing machine motor 17 is not driven by the operation of the start / stop switch 12. It is possible to detect the ascending / descending position of the switching lever 7 and the mounting state of the side cutter 8 using various sensors other than the above. Further, the embroidery device is not limited to being detachable,
It may be of a type permanently installed in the sewing machine body.

For reference, there are factors other than embroidery stitching, such as attachment of a presser foot and vertical movement of a feed dog, as a factor that interferes with embroidery stitching. Therefore, while these are detected at the time of embroidery sewing, it is possible to prompt a warning by a warning message when these conditions hinder the embroidery sewing.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing a configuration of the present invention.

FIG. 2 is a front view of an electronically controlled sewing machine equipped with an embroidery device.

FIG. 3 is a block diagram of a control system of the electronically controlled sewing machine.

FIG. 4 is a schematic flowchart of a warning message display control routine.

[Explanation of symbols]

 M Electronic control sewing machine 7 Switching lever 8 Side cutter 10 Liquid crystal display 14 Lever detection switch 15 Side cutter detection switch 21 Input interface 23 CPU 24 ROM 25 RAM 30 Embroidery device C control device P1 / P2 input port

Claims (1)

[Claims] 1. An embroidery device provided in a sewing machine main body, sewing length setting means for setting a sewing length in a work cloth feed direction, which is provided on a head of the sewing machine main body so as to be able to move up and down, and the sewing machine main body. A sewing machine with an embroidery device, which is detachably mounted on a bed, and includes at least one of a cloth edge cutting device for cutting a cloth edge of a work cloth upstream of a sewing position. Detecting means for detecting a setting position of the sewing length setting means and / or a mounting state of the cloth edge cutting device, and based on a detection result of the detecting means, when the sewing length setting means is in a lowered position, and And / or a sewing machine with an embroidery device, comprising: a warning means having a display for displaying a warning that the operation of the embroidery device is prohibited when the cloth edge cutting device is in a mounted state.